In Physics of Fluids, by AIP Publishing, modeling conducted in June showed strains of the novel coronavirus on surfaces like metal, leather, and plastic were killed in as little as 30 seconds of treatment with argon-fed, cold atmospheric plasma.
The researchers used an atmospheric pressure plasma jet they built with a 3D printer to spray surfaces that were treated with SARS-CoV-2 cultures. The surfaces included plastic, metal, cardboard, and basketball, football, and baseball leather.
The spray using plasma fed by argon killed all the coronavirus on the six surfaces in less than three minutes, and most of the virus was destroyed after 30 seconds. Additional testing showed the virus was destroyed in similar times on cotton from face masks.